With viral bronchitis, small amounts of white mucus are often coughed up.

病毒性急性支气管炎，通常咳出少量白色粘液痰。

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Viral bronchitis may be caused by a number of common viruses, including the influenza virus.

病毒性支气管炎是由很多普通病毒引起，包括流感病毒。

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Acute bronchitis is usually caused by viral infections.

急性支气管炎通常是由病毒感染引起。

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So if you have a cold, flu, cough, bronchitis, those are all viral infections and need antivirals.

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